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Brutus Dominance Behavior After Capture
A couple of hours after being immobilized for collaring, Brutus, a wolf being studied by USGS scientists, appears to have fully recovered. He returns to his pack mates and demonstrates dominance behavior over a younger male wolf. Note that Brutus has a stiff, aggressive stance and upright tail, whil...Location: USA

Brutus Howling
Brutus, a wolf being studied by USGS scientists, separates from his pack mates and appears to be heading back to the den. He stops at the head of the fiord and howls for 2-3 minutes. The scientists track his progress with binoculars past the river where they cannot go. They suspect that his mate has...Location: USA

Brutus' Teeth
Scientists examine the teeth of Brutus, a wolf being studied by USGS scientists, for patterns of wear that indicate age. The front incisors are worn without their lateral cusps present. The canines show some wear and are becoming rounded and stained but still maintain most of their length. One canin...Location: USA

Dave Mech with Brutus
Brutus, a wolf being studied by USGS scientists, is chemically immobilized, measured, ear-tagged, and fitted with a radio collar near the Eureka airstrip on Ellesmere Island in the High Arctic, Nunavut, Canada. This radio collar will obtain two GPS (Global Positioning System) locations a day for 2 y...Location: USA

Dave Mech Following Wolves
Late in the evening, two wolves make use of the trail that leads to the head of the fiord. Studying wolves in the High Arctic allows scientists to follow the wolves during their travels, assuming the scientists can keep up. All-terrain vehicles are needed, and the 24-hour daylight at this time of ye...Location: USA

Brutus the North Pole Wolf
Brutus, a radio-tagged wolf being studied by USGS scientists, is a member of a pack of at least 12 adults and an unknown number of pups....Location: USA

Brutus the North Pole Wolf
A mother wolf carries an errant pup back to their den....Location: USA

Brutus the North Pole Wolf
USGS biologist Dave Mech has spent more than 20 summers studying Arctic wolves on Ellesmere Island, where they are unafraid of humans and can be observed at close range....Location: USA

Brutus the North Pole Wolf
Muskoxen are the main prey of wolves on Ellesmere Island....Location: Canada

Brutus the North Pole Wolf Map
The Ellesmere Island study area is 600 miles from the North Pole....Location: Canada

Brutus the North Pole Wolf Map
Ellesmere Island, where the wolf, Brutus, was radio-tagged, is in the northernmost area of Canada about 1,200 miles northeast of Alaska....Location: Canada

Brutus the North Pole Wolf Map
A closeup of the Fosheim Peninsula on central Ellesmere Island where the wolf, Brutus, was radio-tagged....Location: USA